Bizarre classroom posters from the '70s, Part 3: Behold the roots of memes

It may be spring break for some students, but the rest of us are headed back to class -- way back to the 1970s, when discussion posters like these were created to prompt conversations (and confusion). Our first batch of rare finds featured captions. This one -- from the same set as our mind-warping second collection -- is sans words, so we've added our own captions. Feel free to do likewise: These strangely gorgeous illustrations are like 21st century memes decades before their time. Check them out below.

"I am NOT a slut for wearing a skirt this short! And what kind of a name is 'Rush Limbaugh' anyway?"

"Who knew a puppet not wearing pants would be anatomically correct?"

"Want to be more than friends, hot stuff?"

"I don't think he likes your Hai Karate."

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"We're new to the neighborhood -- and we already hate you."

"Somebody told me all black guys were cool. Somebody lied."

"Then again, he is cooler than you."

"...But combining the two of you doesn't do the trick, either."

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"And now, the award for Best Dressed Student -- from one fashion plate to another."

"Why can't we eat him? He looks delicious!"

"This is what you'll see if you take acid."

"This is what you'll see if you take more acid."

"And this is what you'll see if you take bad acid."

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"If I see that girl whose headband matches her tights, I'm going to kick her ass."

"Hi, girls! Like my outfit?"

"I was going to kick her ass. I swear I was...."

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"Putting together models is fun...."

"Or at least it would be if I had any airplane glue."

"We could always huff some cooking spray...."

"Kidding, mom! Just kidding!"

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"Who says boys are the only ones who can fix things? I'm going to get this lawmower running again!"